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Red Hat Product Errata RHSA-2021:3322 - Security Advisory
Issued:
2021-08-31
Updated:
2021-08-31

RHSA-2021:3322 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: microcode_ctl security, bug fix and enhancement update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for microcode_ctl is now available for Red Hat Enterprise Linux 7.3 Advanced Update Support.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

Description

The microcode_ctl packages provide microcode updates for Intel.

Security Fix(es):

  • hw: Vector Register Data Sampling (CVE-2020-0548)
  • hw: L1D Cache Eviction Sampling (CVE-2020-0549)
  • hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543)
  • hw: Information disclosure issue in Intel SGX via RAPL interface

(CVE-2020-8695)

  • hw: Vector Register Leakage-Active (CVE-2020-8696)
  • hw: Fast forward store predictor (CVE-2020-8698)
  • hw: vt-d related privilege escalation (CVE-2020-24489)
  • hw: improper isolation of shared resources in some Intel Processors

(CVE-2020-24511)

  • hw: observable timing discrepancy in some Intel Processors

(CVE-2020-24512)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux Server - AUS 7.3 x86_64

Fixes

  • BZ - 1788786 - CVE-2020-0548 hw: Vector Register Data Sampling
  • BZ - 1788788 - CVE-2020-0549 hw: L1D Cache Eviction Sampling
  • BZ - 1827165 - CVE-2020-0543 hw: Special Register Buffer Data Sampling (SRBDS)
  • BZ - 1828583 - CVE-2020-8695 hw: Information disclosure issue in Intel SGX via RAPL interface
  • BZ - 1890355 - CVE-2020-8696 hw: Vector Register Leakage-Active
  • BZ - 1890356 - CVE-2020-8698 hw: Fast forward store predictor
  • BZ - 1962650 - CVE-2020-24489 hw: vt-d related privilege escalation
  • BZ - 1962702 - CVE-2020-24511 hw: improper isolation of shared resources in some Intel Processors
  • BZ - 1962722 - CVE-2020-24512 hw: observable timing discrepancy in some Intel Processors
  • BZ - 1972335 - [rhel-7.3.z] Re-enable 06-5e-03 (SKL-H/S, CPUID 0x506e3) latest microcode updates

CVEs

  • CVE-2020-0543
  • CVE-2020-0548
  • CVE-2020-0549
  • CVE-2020-8695
  • CVE-2020-8696
  • CVE-2020-8698
  • CVE-2020-24489
  • CVE-2020-24511
  • CVE-2020-24512

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server - AUS 7.3

SRPM
microcode_ctl-2.1-16.42.el7_3.src.rpm SHA-256: 30e787d492d5c501063d99e669fd26d40afad80154c60405fb64cce410cf21fc
x86_64
microcode_ctl-2.1-16.42.el7_3.x86_64.rpm SHA-256: 5dee09a497713e2ce3fc9b4bfebbd19f3ec665bfaa5f57babfb3cfd11fc9f1a1
microcode_ctl-debuginfo-2.1-16.42.el7_3.x86_64.rpm SHA-256: d33e7264414caed7aabd955f390e8bf4f51ca3c096a916858d50c6df37a91c0a

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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